Dark anaerobic nitrogen fixation (acetylene reduction) in the cyanobacterium Oscillatoria sp.
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چکیده
منابع مشابه
Nitrogen fixation (acetylene reduction) by epiphytes of freshwater macrophytes.
The involvement of epiphytic microorganisms in nitrogen fixation was investigated in a shallow freshwater pond near Ithaca, N.Y. The acetylene reduction technique was used to follow diel and seasonal cycles of nitrogen fixation by epiphytes of Myriophyllum spicatum. Acetylene-reducing activity was maximal between noon and 6 p.m., but substantial levels of activity relative to daytime rates cont...
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A modified in situ technique for measuring heterotrophic nitrogen fixing (acetylene reducing) activity associated to rice is proposed. Ethylene evolution rates measured in opaque cylinders covering the stems of rice plants which have been cut 10 cm over the water level were found independent of the diurnal cycle. Cutting of the leaves resulted in decreased variation between plants and suppressi...
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Nitrogen fixation in waterlogged, soil-straw, and sandday-straw mixtures was measured with the C2H2reduction assay, the I5N-tracer technique, and the Kjeldahl method. The reduction of 6 to 15 moles C2H2 corresponded to the fixation of 1 mole N2. The theoretical ratio is 3 moles C2H2 to 1 mole N2. A ratio of 3 moles C2H2 reduced for each mole of N2 fixed was obtained when samples of sandxlay-str...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1987
ISSN: 0378-1097
DOI: 10.1016/0378-1097(87)90056-5